Modal verbs. Obligation, permission and ability

You ____ speak on the mobile phone on an aeroplane.

• can

• mustn't

• don't have to

You ____ take photos in this museum.

• must

• can't

• don't have to

_____ go to the party? I'm really tired.

• Do we have to

• Can we

• Can't we

I'll _____ wear the black dress tonight. The invitation said formal clothes.

• can

• have to

• mustn't

You _____ rent a car without a credit card.

• don't have to

• mustn't

• can't

I _____ forget to take my library books back on the way home.

• mustn't

• don't have to

• have to

In the UK you can leave a tip in the pub if you want, but you _____.

• mustn't

• couldn't

• don't have to

(Notice on a train) Quiet carriage. Passengers _____ play music or talk on the phone in this part of the train.

• mustn't

• can

• don't have to

You _____ be a member to buy a ticket. It's open to everyone.

• have to

• don't have to

• can

You ____ pass a test to drive a car.

• don't have to

• must

• mustn't